Make entry point that given a DOI it will return a datacite-json with the datacite structure

Description of the webmethod:

/**
     * @swagger
     * /doi/{prefix}/{suffix}/json-datacite:
     *   get:
     *     description: Returns a document in a json-datacite format with the description of the DOI
     *     parameters:
     *       - in: path
     *         description : prefix of the doi
     *         name: prefix
     *         schema : 
     *           type : string
     *         example : 10.15151
     *         required: true
     *       - in: path
     *         description : suffix of the doi
     *         name: suffix
     *         schema : 
     *           type : string
     *         example : ESRF-ES-142846529
     *         required: true
     *     responses:
     *       '200':
     *         $ref: '#/components/responses/json-datacite'
     *       '400':
     *         description: 'No description'
     *       '500':
     *         description: 'No description'
     *     tags:
     *       - DOI
     */